Is dark matter real? While most experts agree that dark matter exists, there's still a lot we don't know.

Learn about the impact of COVID on cardiovascular health and the aging of blood vessels, an aftereffect that is particularly ...

Learn more about the Eastern Massasauga, a rattlesnake from eastern North America — including the eastern Midwestern United ...

How do scientists know how old Earth is? Learn how experts have measured Earth's age, and why it is more difficult to ...

Squirrels with pox and rabbits with horns. Learn more about the viruses impacting these small mammals.

Rising above a desert plateau near Cairo are three giant pyramids. The most famous of them is the Great Pyramid, and together, they’re the only structure among the Seven Wonders of the World that is ...

Learn more about what a star’s color means and while you’ll never see a twinkling green star in the night sky.

Engineered viruses using bacteria as a Trojan horse could be the next big thing in cancer treatment.

Do spiders sleep? Yes, they do. Learn how studies show that spiders have sleep phases very like those in mammals, and one of ...

In Article Audio PlayerWill the Phoenix Lander End Up a Hero-bot or a Pile of Trash? Many landers have tried to touch down on the Red Planet. Few have succeeded.

The Kronosaurus was a massive marine predator with a fearsome jaw, big enough to swallow an adult human whole. They had huge teeth — about 12 inches long from the base to the tip, which they used to ...

Learn more about the new study focusing on how the brain can send targeted bursts of dopamine, leading to advanced treatments ...